We have a D4 had a D3 great cars to drive if you need to use 7 seats they are almost full size seats in the rear. If you have kids can fit three car seats across the back.
D4 has plenty of power we avg around 16 tow Ng a 22 Starcraft around 2750kg
Very comfortable and easy to drive.
Although our D3 started cost $ past 100k on the clock. Our D3 was also petrol with the van was using too much fuel so low range before more fuel

300k was just too short
I was not going to get another Disco although could not find another car that fitted the family and could tow. Almost got a Mux although with our van we where close on GVM
Your narrowed your field to two cars that have bad reputations. So prob going to get something negative from someone
Brother in law has a Jeep never a problem
The things that went wrong on our D3 supposed to be updated in the new D4 so we might have a better run.
See which you like driving a new Jeep if they go our warranty be good just as new.